Feeding-roller for lath and bolter mills.



T. A. COLEMAN. FEEDING ROLLER FOR LATH AND BOLTER MILLS.

1 APPLICATION FILED MAR 25.19l6- 1 y 33 95 Patented July 17, 1917.

- Be it known that I, THoMAs A.

THOMAS A COLEMAN, F VREDENBURGH, ALABAMA, ASSIGNOR T0 PETER VREDEN- BURGI-I, JR., OF' VBEDENBURG-H, ALABAMA.

FEEDING-ROLLER FOR LATH: AND BoL'rnn MILLs- To all whom it may concern:

a citizen of the United States, residing at the town of Vredenburgh, county of Monroe, and State of Alabama, have invented a certain new and useful Improvement in F ceding-Rollers for Lath and Bolter Mills,

. rollers for bolter and lath mills. As is well of which the following is a full, clear and exact description, such as-will enable others skilled in the art to which it appertains to make and use the same, referencebeing had to the accompanying drawings, forming part of this specification. i

r This invention relates to themanufacture of lumber, and specifically to certain improvements in the construction of feeding known in the art, bolter and lath mills are designed to rip light and narrow stuff, and the function of the feeding rollers in such mill-s is to feed the material to the action of the saws and hold it straight while: it is being cut. Consequently, it is essential that the, feeding rollers shall be positive in their operation, both in their operative engagement of thematerial, and in their feeding movement. In the attainment of this posi-' tive operation, it is essential that the peripheral engaging elements be kept sharp so that they will prevent slipping of the material,

and that they be replaced when worn, in

1 order that the feeding operation be uniform.

Furthermore, it is essential thatthere be no.

interruptions in the work engaging portion of the roller along the length of the roller,

as such interruptions would permit the narrow material to ride.the roller, the roller affording no operative means of engagement for feeding the material forward;

In the roller constituting my present invention, it is my object to provide a struc ture wherein the rollerwill be provided with engaging elements throughout its entire length, which engaging elements will be operative to feed material through the mill, and the said engagingelements being readily removable from the. roller and replaceable,so that the roller may be quickly r epairedwhen any of the elements may become injured or worn .As a consequence, in

Specificationof Letters Patent.

COLEMAN,

this improved form of roller, the entire work surface may be maintained on the proper radius so as to'insure accurate and uniform feeding of the material.

In the accompanying drawings- Figure 1 represents an elevation, broken away in parts, showing an embodiment of my invention; y y

Fig. '2 is a section substantially on line 22 of Fig. 1;

Fig. .3 is a fragmentary perspective of one end of one of the carriers.

Referring to said drawings in detail, it will be understood that 1 is a shaft, which may have'its terminal portions turned down to form journals, whereby the shaft is adapted to be mounted in suitable bearings in the machine. 2 is a clamping collar which is keyed, shrunk, or otherwise secured on the shaft. 4: is the seat portion of the shaft upon which the movable portions of the roller are carried, with the exception of the movable clamping collar 5 which is screwseated on a thread 6 turned in the shaft at the end of the seat portion :opposite the clamping collar 2.

Upon the seat portion are disposed carriers 7 which are in the form of cylindrical drum members having the bearing portions 7? which rest upon the seat portion 4. There .is no direct connection between the carriers 7 and the shaft, so that the former may be moved both longitudinally and circumferentially on the shaft. The carriers are provided with longitudinal slots 7*, eX- tending radially into the carriers, and continuously from end to end thereof. The carriers are also provided with annular grooves 7 which are deeper than the longitudinal grooves 7 and which intersect them. The ends of the carriers are formedwith the undercut portions? having a female bevel, and the clamping collars have similar annular undercut portions 8.

A plurality of identical tooth bars 9, which form the engaging elements of the roller, are provided the width of said bars being such as tov permit them to fit snugly 1 Patented July 17, 1917.

Application filed March 25, 1916. Serial No. 86,575.

in the longitudinal grooves 7" and their length being somewhat in -excess of the in SUChjZLShlOIL asrtopermit .of a positive length of the carriers 'i. The operating margins of these tooth bars may be serrated or otherwise formed to engage the material operation. The ends of the bars are shaped with sloping edges which diverge from the operating margin of thebarg -thesaid sloping edges being out on the same angle rela'-- ,tive to the inner margin of the bar as are the undercut portions 7 and S relative to the, shaft One end of each .bar formed with an extension 9 extending from the mner terminus of the sloping edge-it, Th

length of these extensions is sufficient to extend across the periphery of the undercut portions 8 ofthe. clamping-collars:

' In assemblingtheroller, thecarriers are placed upon the seat portion, and .the tooth agbars are placed in the, slots. 7 the. disposal a 1 and bars. on,,one; are staggered .OI'iOflSflt rela tiveto the slots and bars on theother. The

of the. carriers being such that the 1 slots clamping 'co1lar1,5 -.is-=,thentightened up by means of a spanner, so that it} engages the.

toothbars on the adjacent vcarrier, the: ex-

tensions 9 extending across the periphery 1 of the undercut ipontions i8, and the, sloping edges of thebars beinglengaged-lunder' the r -unde1:cut {portion 8. As theclamping' collar, is tightened .up the adjacent learner and the tooth charsthereon will be moved toward the I other. carrier, ;until the carriers. respectivelyiengage the projecting ends ot the toothbars- ,on;;the adjacent; carrier, the sloping-.ends-ot;

the tooth bars-Lot the respective carriers-beeing projeeted under and engaged.- by the undercut portion 7 iottheother carrier; The. extremities ofthe tooth bars on-ithe- 1 ,carrier adjacent theclampingcollar will be engaged by the undercut-portionu8 as above described with" reference to the gmovable clampingv collar. v n Thus it will be seen 1 that by tightening up the clamping collar -5,

'pressure is transmitted through the engaging elements 9 on the-carrieradjacent themovable clamping collartothe other: car.- rier, andpressure is exerted throughthe carrier. adjacent the I movable {clamping collar supon the engaging elements mounted intheother carrier.- Due to: the beveled .form of the. interengaging portionsof the clamping collars, carriers and tooth -bars,-the-latter will be cammed intoltheir seats by this res- Isureexerted-between the clamping co lars,

anchoring'themfirmly in position, and the carriers will be j ammed so that they 'will be heldsiforrotation with the shaft. In this condition the rolleris' ready tor openation-,-

an'ditwill be seen that there are no intervals along its lengthwhich are 7 bare of engaging elements about the periphery ofthe roller. Hence there is no point along the length: of

the-i r ollerat which a narrow piece 'ofstuff iwil lr havegthe' ;'opportunity-' of riding-- the roller. As a consequence, the roller will feed uniformly throughout its length.

In the event that it becomes desirable to replace any of the-tooth bars, such-may be done With very little eflort and in a very short space of time, by simply slacking up theclampi-ng-collar 5 sufliciently to permit the adj acent'car-rier being moved away from the other carrier to an extent suiiicient to cle'a'r'the ends of the engaging elements,

- jThenthe engaging elements may be removed from 'the'ifseats, and replaced with new ones. :In ,case anyof them become stuck or rusted in their seats, as frequently occurs in handling wet material, particularly ifit is wetwith salt water, the removal'is easily accomplished by inserting a tool, such as the 1 end or a :file or similar implement, through onehofithe peripheral slots -7 and underneath :the; imaeredge of'the bar, whereupon the bar may. be readily pried out.

" Iiawill be understood, of course, that-in the" practicalrzembodiment of thehinvention, the roller -..wiil-l lye-provided with a considerably largen-number of I slots and tooth bars than is illustrated .in thelaccompan' ying drawings,

many of the same having been omittedintheiaccompanying drawings for the purpose otclearnesss is also tobeobserved that theinven-- tionis not limited to the-s ecifio form herein illustrated and describe but that it comprehends allobvious A and expedient modifications or.altered-;forn-1s within thescope of the invention :as indicated in the following claims. a p

Whatl cla'imis:

'1. -A -feeding roller-for lumber machines comprising a shaft, carriers mounted there-' on; and being relatively movable, said car riers {being provided with longitudinally ex tending-periphera'l slots, engaging elements seated-in said slots'and' eXtendi-ngwbeyond the-ends of--the carriers,-the respective carriers; having ends formed to engage the exlongitudinal slots in each carrier and i hav ingtheir extremities formed to engage under the underou-tportion of .theother carrier, and-terminal clamping members for holding the carriers and engaging elements incontact to retain the latter-in the slots.

In a feeding roller, the combination of revolub1e-=- carr1ers mounted for relative movement toward and from each other, work engaging bars removably mounted on each carrier and spaced apart about its periphery, the bars on a carrier having en- In testimony whereof I hereunto afiix my signature in the presence of two witnesses, this 21st day of March, 1916.

THOMAS A. COLEMAN.

gagement at their extremities with the other Witnesses: carrier whereby they are retained against E. E. HOFFMAN, displacement. J. M. FRYE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

